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A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

NASA News

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Spaceman Spiff
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NASA News

Post by Spaceman Spiff » Tue Jan 19, 2010 6:21 pm

I just saw on TV that an independent board is recommending that NASA not abandon any current rocket designs and that the advisory board the President appointed to investigate was not taking human ratings into consideration when it was recommending that NASA contract out the flights to private companies.

Ideally, we should have NASA continue what it's doing AND give seed money to private firms to insure that we have commercial alternatives. We can't put all our eggs in either basket!


Spaceman Spiff
"What goes up, must come down"

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